-er a-a a-b a-t aaa aab aae aaf aar aas aat aav ab- aba abb abe abf abr abs abt abv aea aeb aee aef aer aes aet aev af- afa afb afe aff afr afs aft afv ar- ara arb are arf arr ars art arv as- asa asb ase asf asr ass ast asv at- ata atb ate atf atr ats att atv av- ava avb ave avf avr avs avt baa bab bae baf bar bas bat bav bba bbb bbe bbf bbr bbs bbt be- bea beb bee bef ber bes bet bev bfa bfb bfe bff bfr bfs bft bfv bra brb bre brf brr brs brt brv bsa bsb bse bsf bsr bss bst bsv bta btb bte btf btr bts btt btv bva bvb bve bvr bvs bvt bvv eaa eab eae eaf ear eas eat eav eba ebb ebe ebf ebr ebs ebt ebv eea eeb eee eef eer ees eet eev ef- efa efb efe eff efr efs eft era erb ere erf err ers ert erv es- esa esb ese esf esr ess est esv eta etb ete etf etr ets ett etv eva evb eve evf evr evs evt evv faa fab fae faf far fas fat fav fba fbb fbe fbf fbr fbs fbt fea feb fee fef fer fes fet fev ffa ffe fff ffr ffs fft ffv fra frb fre frf frr frs frt fsa fsb fse fsf fsr fss fst fsv fta ftb fte ftf ftr fts ftt ftv fva fvt ra- raa rab rae raf rar ras rat rav rba rbb rbe rbf rbr rbs rbt re- rea reb ree ref rer res ret rev rfa rfb rfe rff rfr rfs rft rfv rra rrb rrf rrr rrs rrt rsa rsb rse rsf rsr rss rst rsv rta rtb rte rtf rtr rts rtt rtv rva rvb rve rvf rvr rvs rvt rvv saa sab sae saf sar sas sat sav sba sbb sbe sbf sbr sbs sbt sbv se- sea seb see sef ser ses set sev sfa sfb sfe sff sfr sfs sft sfv sr- sra srb sre srf srr srs srt srv ss- ssa ssb sse ssf ssr sss sst ssv sta stb ste stf str sts stt stv sva svb sve svf svr svs svt svv taa tab tae taf tar tas tat tav tba tbb tbe tbf tbr tbs tbt tbv te- tea teb tee tef ter tes tet tev tfa tfb tfe tff tfr tfs tft tra trb tre trf trr trs trt trv tsa tsb tse tsf tsr tss tst tsv tta ttb tte ttf ttr tts ttt ttv tva tvb tve tvf tvr tvs tvt v-a v-e vaa vab vae var vas vat vav vba vbr vbs vbv vea veb vee vef ver ves vet vfa vfb vff vfr vfs vft vfv vra vrb vre vrf vrr vrs vrt vsa vsb vse vsf vsr vss vst vsv vta vtb vte vtr vts vtt vtv vva vvb vvr vvs vvt vvv

-ase a-be aaaa aaab aaae aaaf aaar aaas aaav aaba aabb aabt aaea aaes aaev aafa aafb aaff aara aare aars aart aasa aase aasf aass aast aata aatf aatt aava abaa abab abae abaf abar abas abat abb- abba abbb abbe abbr abbs abbt abee aber abes abet abff abra abrs abs- absa abse absf abss abta abts abva aeaf aeas aebs aeer aer- aera aers aess aest aeta aetf aetr aett aeva afaa afar afat afbs afee afer afes afet affa affs afft afr- afra afre afrs afsa afsb afst afta afte afts afvs arab arae araf arar aras arat arba arbe arbs area aree aref ares aret arev arfa arfb arff arfs arft arr- arra arre arrr arrs arrt ars- arsa arse arst arta arte artr arts artv arva arve asaa asab asae asaf asar asas asat asba asea asee aser ases aset asfa asra asrs assa asse assr asss asst asta astb aste astr asts astv asva asvs at-t ataa atab atae atar atas atat atbs atea atee atef ater ates atfb atfe atfs atra atre atsb atse atst atta atte attr atts atvs avab avar avas avat avea aver aves avra avre avst avva baaa baaf baar baas baat baba babb babe babr babs baer baes baff baft bar- bara barb bare barf barr bars bart basa base basf bass bast bata bate batf bats batt bava bave bbas bbbb bbbs bbeb bbet beaf bear beas beat beav beba bebb bebe beeb beef beer bees beet befa befe beff beft bera bere berr bers bert bes- besa bese bess best beta bete bets bett betv bevs bfas bffs bfsr bfta bfts bftt brab brae braf bras brat brav brea breb bree bref brer bres bret brev brrr brrs brsb brsr brst bsaa bsas bsat bsea bseb bsee bser bses bset bsfa bsff bsfs bsra bsse bsts bstv btaa btaf btrt btss bttb eaaf eaba eafb eara earb eare ears eart easa ease east eata eate eats eave ebba ebbr ebbs eber ebes ebsa eeea eeee eees eefa eefe eera eers eese eeta eete eets eeva efab efas efbr efes efet effa effs efsa eft- efta efts eraf eras erat erba erbb erbe ereb erer eres eret erev erfs erft erra erre errs ersa erse erst erta erts erve esab esar esas esat esba esbs esea esee eser eses eset esfs esra essa esse esst esta este estr ests estv etas etat etbr etee eter etes etfa etfb etfe etra etre etta ette evae evar evas evat evea ever eves evet evra evre evrs evst faaa faas faba fabe fabs faeb faes fafa fafe faff fara farb fare farr fars fart fasa fase fass fast fata fate fatf fats fatt fava fave favs fbar fbrs feaf fear feas feat feba febs feeb feer fees feet fefe feff fera ferb fere ferr fers fert ferv fesa fese fess fest feta fete fetr fets fett fetv feve fevr ffar ffee ffff ffrr ffsa ffss